Chip Burning software and hardware for 93 and older?

What kind of software and hardware is available to burn your own chips for 93 and older GMs?

www.tunercat.com

works great.. you need a chip burner and a piggyback carrier too.

Check out this site at the Thirdgen.org forum. These guys have lots of information on DIY prom burning.

http://www.thirdgen.org/newdesign/tech/promintro.shtml